<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Array.from()</title>
</head>
<body>
    
</body>
<script>
    console.log(Array.from([1,2,3],x=>x*x));
</script>
</html>
